CVE-2008-5909 in OpenSolaris
Summary
by MITRE
Unspecified vulnerability in conv_lpd in Sun OpenSolaris has unknown impact and local attack vectors, related to improper handling of temporary files, aka Bug ID 6655641.
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Analysis
by VulDB Data Team • 12/06/2017
The vulnerability identified as CVE-2008-5909 resides within the conv_lpd component of Sun OpenSolaris operating system, representing a critical security flaw that manifests through improper temporary file handling mechanisms. This unspecified vulnerability operates within a local attack context, meaning that exploitation requires prior access to the target system, though the exact nature of the impact remains undetermined. The issue is catalogued under Bug ID 6655641, indicating it was tracked within Sun's internal bug reporting system before being publicly disclosed through the CVE framework.
The technical core of this vulnerability stems from inadequate management of temporary files within the conv_lpd utility, which serves as a line printer daemon conversion utility. When the system processes print jobs or handles printer-related data, it creates temporary files that are not properly secured or managed during their lifecycle. This improper handling creates potential attack surfaces where malicious actors could manipulate temporary file contents, potentially leading to privilege escalation, information disclosure, or system compromise. The vulnerability specifically relates to CWE-377, which addresses the creation of insecure temporary files, and CWE-378, concerning the creation of files with insecure permissions.
From an operational perspective, this vulnerability presents significant risks within OpenSolaris environments where local users might exploit the temporary file handling flaw to gain elevated privileges or access restricted system resources. The local attack vector implies that adversaries must already have system access, potentially through legitimate user accounts or compromised credentials, but once inside the system, they could leverage this vulnerability to expand their control. The impact remains unspecified, suggesting that the exact consequences could range from data corruption to complete system compromise depending on the execution environment and system configuration.
Security professionals should implement immediate mitigations including updating to patched versions of OpenSolaris, reviewing and hardening temporary file creation practices, and implementing proper file permission controls. The vulnerability aligns with ATT&CK technique T1078 for valid accounts and T1548 for abuse of privileges, indicating potential lateral movement and privilege escalation capabilities. Organizations running OpenSolaris systems should conduct thorough security assessments to identify any instances where conv_lpd might be actively used, particularly in environments with multiple users or shared system resources where temporary file manipulation could provide unauthorized access to sensitive system functions.